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x in (-oo:+oo)
x+x+3/2 = 10 // - 10
x+x+3/2-10 = 0
2*x-17/2 = 0 // + 17/2
2*x = 17/2 // : 2
x = 17/2/2
x = 17/4
x = 17/4
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